Hardcover

A Model Context Protocol (MCP) server that exposes read-only access to the Hardcover.app GraphQL API. Tools are namespaced underbooks.,users., andseries., with resources and prompts to guide safe, low-volume querying.

# Option A: with uv (recommended) uv pip install -e . # Option B: with pip python -m venv .venv source .venv/bin/activate pip install -e .

export HARDCOVER_API_KEY="Bearer <your-token>"

[mcp_servers.hardcover_mcp] command = "uv" args = ["run", "src/hardcover_mcp/main.py"] env = { "HARDCOVER_API_KEY" = "API KEY heRE" } cwd = "full_path_to/hardcover_mcp"

The server registers thebooks.,users., andseries.tool namespaces, plus resources likehardcover/tag-categoriesand usage prompts such ashardcover/fantasy-this-year.

- HARDCOVER_API_KEY environment variable is required: ensure the variable is set in the same shell you start the server. Include the leadingBearerprefix.
- Hardcover API returned an error responseor 401/403: confirm the token is valid and not expired.
- Slow responses or timeouts: reducelimit/offsetarguments; the API enforces rate limits. Start withlimit<=10.
- SSL/HTTP transport issues: check local network/proxy settings and retry with a stable connection.

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